Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6768ae5ac99fe4b98d1daf626057be7fbd55775cd62f5971cee73b17a5ff2abe' 
  AND token = '2oxOJ9kBjetsJnoHF6/v07MhX1R0v4g0YDCrH6JG1kU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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