Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bcb7c8297d92d51d917d4868f190380700e14d20f314343c1864cbcc1cfb697f' 
  AND token = '5i68PDo7vMPTsHODjrJlFjVktj5QvfjyGurBylOgumQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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