Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e48d5bf8dd73a8c8a2a40438f989e04f152e15f30f4d7bf6328a6857aad387b6' 
  AND token = 'qBp6jd2FKZw3eok2X4xlO4EU43/wCXJsydhdpspgdVs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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