Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '44a5c3bd943776d16e4ad4458440c6f45b02ee44d9b7f1c83e38982b645adbfe' 
  AND token = 'HmjRE1PqxUHqL5nJm2jZ4Moa9ePSdn1Q3R6SLlxhueI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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