Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '009e346e9c5abdcea6dddb7065476dd72551c79d70749c669d960484a37c42bd' 
  AND token = '2G/SUXheSAA+R0uSRqAUcy70mPwmRjZIU0Gs5lzP6w0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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