Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd08a665845a096755fd942061e24ce270c04d1d1f7cee7f55222f44b949fa7b6' 
  AND token = '1ArBa0JluQzhQDkyEP8OhdtmpNZ98Fg8/44kbhRKSKM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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