Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd17cc5a96dedc53a57a825209a96dd039d637a1c1f9de6f4621b0a71486ad5c6' 
  AND token = '9C1dQjz58+3s/LWXml7t3IOYaRs3eANdfYM6JoQPC4Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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