Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c1cf7b1f8fa59d159179fb570d91147cd71e9b751687b7ccb1a3f7466f7e076' 
  AND token = '2mqheqwg9C8XkMqx77exWP3N4y6BLJIJhGeChC1LcpQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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