Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd914407eae5314e535e186d7c888d664d4b277e0164551f64259bd576dfcaf9e' 
  AND token = 'GC4xF6U6lloby/ud3CddsYRpnJmt7OscZK2vaEAojGo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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