Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9611dadfedcc8533c427c8f02b397f07fd272b4fb34a6ed64c375ee7cf6b17e6' 
  AND token = 'jkx7BVNYLBVCSsEQBvS6pG69cwR0AkXY6XSvsH5Mrs0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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