Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8d7274ea84dda178fcab91d03f2a1e910f0e810f4d258a0d9da3b0053d6b10e' 
  AND token = 'gjHj4EMupQi5uOp4Il0Fpk+re+78KUZn2mEcSuxtNd4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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