Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0765a8af574787ac94d0dfda5177f2a2995f30e07265c76f4829cf531250982' 
  AND token = 'Keds2ytT+FteP9uKJuj2UbCgWwr5JUrJf4fL/fuZRZo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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