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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7366b124a28680243f06ca4895e54863a77fc3956c2bfb9b7bc92470378305ef' 
  AND token = 'z5yFNXY+kC76KATejzTTKSuXopUTd3G02vnalEF+5J8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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