Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '06c80ece32e45158cdec8ef2f3d36552e6a7c3553ebb1ccbc00e92f61559aa88' 
  AND token = 'vkJJeFY8bpHnhSRDTBLrOguvlLHDZc2E01+FyvDWXKU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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