Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e818b1423942cbb03aa3f80c88b24cc06c0b1809c44c4b6defb01e1271fdf215' 
  AND token = 'PhhVvJV4osBuaSb4u12tFbQoljsH4mKMkDLYh2e7OS4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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