Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38bc013e2d661118fc3410b7140913483b35a1248dcdf54c6cd1be59d60abb86' 
  AND token = 'uCE4IWoUKaFqMWEok75X4MZ66i5KBT0JL4wmRT5wKgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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