Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '834b14cf02c3bd329bc79f20267cb564838df1a969eb9e3446a660149750a0fe' 
  AND token = 'VT1si2oTbDuhrw5iO1FwiG+nG9j3JAiFxfWI2eNldxk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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