Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39914eca01c4cc5d1795b78e8edae0df1eb27d25e50c0b39ad1c28e9b403704c' 
  AND token = 'vy6BAh0CYM8Erm3O/y3hw52zlkqJc7MHyAAcTzZSDXE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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