Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '870d211ec8ca2f8580991d84e7e109ed66e321a262dc62c08a35133b8aca2175' 
  AND token = 'VcV6J84Qjy2UlRWAavIzeBrFxDFQvccdhywR7raXZ5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00160

JSON explain

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