Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cdbb0765b179d24613f60302cbd8ff649161e7ed795497e6cd1e8a1b987cc7ee' 
  AND token = 'R5panF8OnZqs4tmQfdwS1mD4u5atAviWWHRV78bFdrs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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