Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f40c2a3029de8cce5a316a22fe15d95fa863d6c727cba1c172c3cc0516011638' 
  AND token = 'HVf/e8VM/qwvMc9FD1qi6pTjqsI7Ae7x/7nL0kb+/qc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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