Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa343e8243578c99236049edd870d8ff1d2ea9ec40be01865b0bf2c138265ce2' 
  AND token = 'Yuhda0DF/lNBkQ+EzqcETOsr+EEy/Panblvl+4s8pWg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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