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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ea32037023cd2f24a565881ec42d0265a8aa42763a954ef1111aab1e35ffe25' 
  AND token = 'nye7acPwiasjySnPKQz18Ugn4HV/EDlln+C9tfq0jcw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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