Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '087e9897b59f35c3b97a3ee310d9f730f0c7288c29320f831d9443fc2409f028' 
  AND token = '3Iuvhz4AeWFWJTDnQRQpdrWI465rnL7gNNF6KW2k5XE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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