Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '734f39452017e4a02ad34f7b329bb216f421d8fe0d2046a52452f2831389b22a' 
  AND token = 'fiE28Ryy4Q2JFiy9qdiGxjENVeAVjsmx1hHBruZY7/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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