Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '06bb6766073f9bb2ab61e2f4b1b764d22e3b1a66c89228e97de63b8b70395829' 
  AND token = 'Fw3PXuyz5uEqthGOsL0PlmFleMcb6ZPqnbSKHS8KDHU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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