Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09ab5b0a1e9131b6487761cf511222b95940052ca075370b926caabf5500bc6a' 
  AND token = 'Kpg9sZ4H56MTLA+Iov3u2207tPlOc2C3gKDfJoEhHlA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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