Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41044b85af779f3ebfcade08626435bbb0bd6ec97999843838912c95ad0033e3' 
  AND token = 'iUjzArRG9YEOyixo96/bSB1keco3lerHh3t/XNDoboM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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