Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f7df033e9c5390394d124b05093068358c470f52f072e515b8c411ca22d2d7a' 
  AND token = 'EG24AbjVm5Q/u1FBGiM8edw3LtDVxxwY6RplAWCz4F0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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