Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09b6c041ac9d7a42a98ba5941f37a1ee031cdcf630b838b6ed07e0d5423b37a5' 
  AND token = '1WcMWnoDHEAkRNUMHYVXfr2F2XX6xZFYVtBTHPSQSBA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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