Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc717c95e0145cf41808d820129115bfa88633a1dfdc92010501f8d14a6ecc0d' 
  AND token = 'y9+RsfnBLi3ba94qSjvLV3lT3Zu6ANZXa1Jun1tRa9A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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