SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '967e7e1181f4b80370c8bd3f1de60ebcea0887ea494756f3d5b03301f8f78d8e' 
  AND token = 'yPBavsE8glhCooDwTaC6j/gHRKFlImwYJyjx5nPV4Z4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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