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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9128085719270db397da6555e24833d5420320a28d939c702b36e23ce097fb34' 
  AND token = 'KcffccyK0s8GgqtI7NrVt8U25aMWRGgk+R9QlPsYVjo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}