Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a83cced2239053a457ff5371f66eaf61a351faafb2a20cb2351ec3ad9be1b079' 
  AND token = 'AitlXuNwCIXVO2akmcua5Cq5GWHx2EYFO/rbYJDZRmE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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