Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '52c0f2c8d474277bb3470825d65722d3c24272f6c84436bc40059b1218375f69' 
  AND token = 'eVXiAKhbCpA9NmEqOevLEI8uDpHnNLfTTEtDkDaOcr0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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