Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0971f7e5ff37ad80b595af5171b3fe0fd37268ce4d3c6abcb2a826d3f96b0deb' 
  AND token = 'DFdkga5+iSbBi2mPsMBWfWC90X+WBaUZvElY7XCn5iI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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