Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de930be6dab9dc903be18ca4cf283cf313da82b48346fa319ae6b0f7537a1856' 
  AND token = 'DYy75akj1O+y4kr4Y3KrfgNCR6o2tZraH/PqSLujSeQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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