Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '15bebe9b430aa462b0d1ec9c5e3c17206d975aa314b836abc53649b3f6318890' 
  AND token = 'IO1ktP6b3y4WRFX8E++DvorbBaeP2bCxZsrQMlxRXPE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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