Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00318475b51e518014aa98be9e1f811cb79444d97071ee377f4b42ccdd81c07d' 
  AND token = '8lYcGRTBOOY22BQ7lw3lG7AOdH0k5o3CzhBxMhLDqSk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00068

JSON explain

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