Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ce6feab1ccd9f3341c4ad87c6a3173b3307bd05e7baa84fef51b45a27437245' 
  AND token = 'v1QFIMTm0l8iyo5ZCGQn74u0vIAmuEkQALnFtoHOHN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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