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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e9df7db6fb0169b66f73740514e8681d185aa41a2d923de723eb4e1486a85676' 
  AND token = 'b9Ay6SUAyDJke7LfvQSHi0iE3iLi580P5woW5eAiLrw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}