Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee0b01ddf6ae277d193646901b9f65b5623ef4a8a6c53352aa31ca87603e0b77' 
  AND token = 'jiuVBFhzOO3f/nb3igLPm0LWKmXSiKT/22YKLaq64fA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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