Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7be3a3e4b4ef231cca1c6d1d342d4aef1798f3716e876621b6a8b144a192ef3' 
  AND token = 'E8UifXGwz9+pGXgsljE2Gikv0733ArzeiNKG/EXTPeg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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