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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf69f6494dc7f965a80f6ba678c0155eb2af19d8f3f3feebb7fb3f0ed4f0ff24' 
  AND token = 'ypI2etlG7prs07Ru8nbPX7VXUQt+N4qXRiWG3nuIfGk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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