Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd91aea2499a3ba3f1fa6715127330417a571f775fab5b474e5b196267b00ff7f' 
  AND token = 'L8Dl7JOSNpCpCFIDd29k5LqkJJD2zDodLAu5l9Kimz4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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