Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4d05d1e6681aa59d87e12fd4e38615d342554d03fca81e090f11e6399f44437d' 
  AND token = 'ku6R0j6p938U91Hw4LtlfYDGanc0xjVda4nZ1Ve8K1g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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