Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5cdf77fdc8106a418a2a37d83cfe4f027e244ec92e47298af4d8bfc507073094' 
  AND token = 'heAHncbal6FwQwtWwq0sIxQ/oc7lzNA2lepzuLTLaIE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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