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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ebae676ec5ff8dfb130e9c4b797d4e9467b30337529aa99542cf372d13ca37d' 
  AND token = 'a8vtmu8FWpR8fg28ZSW6HpoYeLMQpiv5wDw8+NvSS0Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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