Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c11662d58eecea6f9c2c4513c597b81c664687c11b27aef77b619752043dbeec' 
  AND token = 'hc2TF8X65VJusJ8P0Dxvt/YVt2e0+6pAc1OpHj904hY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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