Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e36dbcb009b4f7a2127f8ea9116f8c03f387fd0ac9952493b8713177afa412c0' 
  AND token = 'PxXZ5rF8l5+rK0Wdvdwa7BTWXlzNx4nkbHHIHVmf97U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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