Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd8694e43656d31529382ef79a886ecbdf086be4398c2ac2bfa38463a271ea46' 
  AND token = 'mQzRNcLsNBF+UpOxabUQ+O4XGZxJjHcp43MOxOGZYzE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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