Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7afe14308664f283215dd13e78dccf9d78ab27e41866b61a83baca77ddacbc0c' 
  AND token = 'sMDdmXFLFrG9yYkaYWlzo9xa22BVn+QaoxgBgW8wIck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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