SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01fae00f70b55a0ffa2f3f9dd52bf7b62a19222edf74e319b2298058e9c8ede6' 
  AND token = 'G59HYnxwm1LaVEm3kQmlrUW16FHmsGf80BI3JHDXETs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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