Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c579c9b5d75ae90bd792b252a6d2a2133969207596b969cf351274b7d03c2325' 
  AND token = '/oQC88c9wV3xWXbS77C7sULDWXJbZwy0qwBri+Sj6Vk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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