Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c4928e23b9bd36985050698c9268ee4109426261a92552de22ba4220ae76ef6' 
  AND token = 'sLZVf7f7wzbKBxibTSeCfk/mpzNBWBa/c7XwbPoZBqg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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