Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38eabbf79b383e1f06565fdd33d4f92898613bfc1e4313de57a940352716dbab' 
  AND token = 'Fr6/HwzJzTnY5xphxfMCmrYOArbjMmX8UXaLfBzfyJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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