Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33e3589b73790b174baaa3858e19ed66e7119ba95bf3c07fc3e5b8423517752a' 
  AND token = 'iY58pryjHu/18+/BXnblU2MebyPxAuFY+3SAI/AAa84=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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