Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0265760a6670e04735f831c2387e2c4aba48f43769208948fa63eafb89dbfb01' 
  AND token = 'RwznzXecRgnUc/N+i4hnIyaFmsPRrBJAqAHOD9t/Pb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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