Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '480d5aa1320f4b2c195037f76f6ff9ccf827efd5cf05eed8618f5c082ad1e093' 
  AND token = 'gOaOAYP1VOPw2rvXVgiuH4v30+5sHz4zEZ9oee7nba4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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