Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d4309302f35434f9854709ed95b0be732e815b7cdeb26ca3e9f5e45e697c66d' 
  AND token = 'iTiDz928BbxYgFutc21tS2B1Bf7GhEzO9YSU1ejy7Ng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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