Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '992b4dae577bf2afd4d92aa8975c27f50d99161b59a90dd6fb935c7a31748002' 
  AND token = '+fF/LHMfDpDv4fsq8d6ZS4s/6usXufYJkkwuULtp2z4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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