SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96648314ba3d9380721fec4b5cbd5baa29b50bca4ba9b118c93f80c94b2fee18' 
  AND token = 'vQqYsl746wnyJgjU4+Gz0BxdGNfjEyvncy7eGhTvX9s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}