Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0819527ed2201f16087346fd38605e7fee40ad88dbba9b84d525ab0ce1534ee1' 
  AND token = 'LhD/61KBEqktXdQtjpY8q/LxeylE1tG+cAsgOPSmsMA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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