SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f0054a35975d54d06f4cb17f16d2ca57fd7febab758993b7b864b803c578c8e3' 
  AND token = 'PIezIMmzheTavYrvHX/2nCfvJSjD4ZW3p+FUbtMVOpc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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