Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abeb7f97cab424f764a76a373c32d2b7ffa7329ed8d17006bc29d02bfc593562' 
  AND token = '8Wxyr8j2YmPrEy/NzjcKfTHYfIT310rZeDxJkbsV5xY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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