Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63092e778341d620d1248ad0eb4e2dd6b869451aa040b13b5e0ff6b8bc201e92' 
  AND token = 'PnerRAlrYpgeTRttp9z6q6ribN3edYrnhWjVt1Z/c40=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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