Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee17f72539cf7aa45b961eac834cddf5675ee463ca88d9ef9c89ad2c32002008' 
  AND token = 'EjlTM3/oX8PIi9+Ao7m+Z5aA3oS3tGfgmqyt5NH0ttQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00076

JSON explain

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