Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14913f7648290a64e3d6b1deb39ebaf1605edac03cb79312bcb9f430911435d7' 
  AND token = '0FlQ2L6qsIp208fne0GS+12opwRYtrznS9M7uUV18g8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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