Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02697c88f15f6c75d2752aa19a2c3bba18c3fd227d0f509170cc02debbdd6c37' 
  AND token = 'd59Onc21ewFX7ct2vvdWWUleu7QNNI2fqAQVmvr8GUQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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