Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ce5fcde6b2967df6da2c15d05c437750e08f311d5008871eed1dc7dc1146ef3' 
  AND token = 'olsbHTGz+nDdXph6I2sKHYxwAgN83zVgNIz5p1cbDLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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