Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fb7a336134e7e1bbcb6dccd387c1c6e6e457386673646279e2f0039966a09ded' 
  AND token = 'RxvD0a1IYz55IiifyRRS3BowW1GiLklCenb9f9sDtmM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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