Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bd3895d736d0dc7523e4f84a37d80f00ce86b1e01dad5db37d37d9f36b7d977' 
  AND token = '0x+I9Zo17MW2Er1l9IZTAITAOaleUZvcSGCU4YXJ0aE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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