Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecaf11983ec768e68864488a59bcd4e748089e428165f586a6115a1a4ae69639' 
  AND token = 'VThYGT11agDOASsB9PwnoJbWrHzYzU2e6m5JZqCn5c0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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