Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ebaf71454746b3ed3ab7b61d5a300dff23046a3a0a475943df8ea24f2a022767' 
  AND token = 'DoNxcmhLK377y0dChsX81K65gRTS2FG8zlIJXPNZNUA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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