Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd6aa4d3e5a7c197d9b2050484e10680892b3acebb172ca63a214c47789e78846' 
  AND token = 'vnM0gPvdSNEzZGdff0icqumRWr/4yv4pfU7Ko8A0l/E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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