Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b970aaea84f7cacb763a26cb850a330b3a9b519231684605a4f6e9478d8f1533' 
  AND token = 'GS6/621Fvw91zk/bhP4bvc8H7Da7EdOxQy6G3DO/aUY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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