Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '98c95806a0baaaab41d597967edf0a64f1e32dd3c1f3f227f3b2626930a63417' 
  AND token = 'Cpj/3AoATjvrVgMcskXYP3XCALUG84mb8d4fK6LqXj8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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