Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8fb50b8f7b66f9ce604c7dbda34cb427108d7802d953dd8c1c33725d0eef7b86' 
  AND token = 'wsgifqr5Yq3NVAiEx1a2uwbRRJkxiaWPC+BE0MgXghw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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