Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'afec025ed6b27750dcf918620cf4aff76079195be3e07e8e33abe788ab2e4e84' 
  AND token = 'ABQvBgZzI0Hs1RQf5B87QU9IJ1lKha/WNuvvTq9/s2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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