Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7f22b1f0fe76a321cb7cb50cd049a1e3ed0b53d27a18dc677c0224cca1e981fb' 
  AND token = 'V9+RRTfY/MCe4O+MX3ES1Wd3gU50l7rh51ofOswUARk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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