Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1415844aad148b53e133731a7cc435eca94b5ce7dafc9c1ab02c70265d699830' 
  AND token = 'W4sLFxx/dkIweON+1O+4GMEiijEI0CRsVgn7S48+EUA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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