Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9437b76ef9076d552743d85413a7942eba1994db03a19a18c82cccddc0af33e1' 
  AND token = 'P0Cim1b2QYn80LKTtDbkKCTjOAquzp6V/pQhhj8RnCk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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