Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d63593c7c5abd3bc49f7e814e5bdf6416975d0bfa5532de57c8c94b44c9d5c4' 
  AND token = '3jl7oimAS9mr2Kfla/bc6PS4+tg1GVARlgQVgTe31Vs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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