Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09dd34764eb8246f2392033ebda9457d3590655f70d257cf63512dca59b82851' 
  AND token = '05qA9KsOoG/4f3JSdSQlFr1J5K6S4ozsd0cLUF5zlZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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