Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c628044cd1cf133d464e5ac50dba5209285cebc167fd868574afeb3c6eb95a1b' 
  AND token = '3KYgpwedQv3W7Jtc9U18slt0hIgipKNb/8nHQf2ceHA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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