Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1208a45212c8db3cb23eb75b804bb08bd89b3ad54e3546d014a401cd8f937b84' 
  AND token = 'JbRwIs/9V2O49fDNqdf0dzos4Xh8RjgJX371AShQuBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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