Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02244ce651abced0e49d1273c76e380c2adf7cb37fb1087ab2dad1475cc41098' 
  AND token = 'lHCygEnOOmEFHlyHWIB3eLFrarAJTf5CE3hhTacUQBA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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