Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0668f279de5355994a7bb8b07f8bdb0180a89c353e7c5b2d8e30deb61e5f9b9' 
  AND token = 'Q698JcJ8Rn88oUeIeyMWDT1ZjBNaSyVzEKv9Yty3rPk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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