Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89a919030bf5cc0e5b5790cec9915a30a6f5512fe8691bb33569eba667df2225' 
  AND token = '4jwYh7tnsP+HMkye0dTxYNcoHgNnlkYl0ah7G1KCuSk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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