Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f2c5a2a4db0d9cb78abefc039475782b7484935924c44c0bcdb266e9731d766' 
  AND token = 'SPS3qfPcDbwlEzJtZAlETr0lLfpHoswApSmrtFtYobw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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