Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8659cb0c28e8b20dc48595aee64a4d68ad8528706fcbc28b06e794f6fb3cc1cf' 
  AND token = 'W+GPicn3f+kpMKzYy60aJ09tTJDTaCnqu08wFpLZ12A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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