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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f4176e3a05958c63feda7e6c851daf98769b95891d26acf3c59d95a9ccd49c6f' 
  AND token = 'qb8rgQ0kSOG+HkONH1NgGrMehdqQxzWBb0u0oqEfKP4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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